My 12 string Goya acoustic guitar was made by the Levin company probably sometime in the late 1960's as best I can tell. The label on the inside of the guitar says, "Model No. TS-4 Serial No. 3821057 Goya Music, New York, N.Y. 10010 Made in Sweden." The seven digit serial number may have been used for this particular model and may not be older than six digit serial numbers on other models. There's one shown on page 7 of my 1964 Goya Guitar Catalog. "Click here" to see it and one on page 7 of my 1967 catalog as well "Click here" for that page. More information about the Levin Guitar Company can be found on my "Goya Information" page. If you have any additional information about this guitar model or the Levin company please email me. Thanks